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Cisco Bug: CSCvs69746 - Good code fix for defect CSCvr60265 : VGW does not offer all SRTP ciphers during media renegotiation

Last Modified

Aug 29, 2020

Products (14)

  • Cisco IOS
  • Cisco ASR 1000 Series IOS XE SD-WAN
  • Cisco 4221 Integrated Services Router
  • Cisco ASR 1002-X Router
  • Cisco 4331 Integrated Services Router
  • Cisco 4321 Integrated Services Router
  • Cisco ASR 1001-X Router
  • Cisco 4351 Integrated Services Router
  • Cisco ISR 1000 Series IOS XE SD-WAN
  • Cisco ISR 4000 Series IOS XE SD-WAN
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Known Affected Releases

16.9.4

Description (partial)

Symptom:
For secure SIP-PRI calls, when IP side initiates hold/transfer/conference and media renegotiation happens, VGW offers only previously selected SRTP cipher instead of all supported ciphers.

This could lead to a call drop if a new media device does not support that SRTP cipher.

SIP-to-SIP call scenarios are not affected.

Conditions:
- SRTP SIP-PRI calls;
- media re-negotiation for call hold/transfer/conference.
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Bug Details Include

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  • Status
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  • Known Fixed Releases
  • Related Community Discussions
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